EcoSpark works with communities and with schools, providing them
with the knowledge and tools to monitor their environment and
take action for positive environmental change.
Interpreting Your Results
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See the Stream Study Field Manual:
Now that you have collected your bugs, it's time to determine the health of your stream.There are calculations that we need to do to determine the health of the stream. We call these the indices.
- % Worms
- % Midges
- % Sowbugs
- # of Taxonomic Groups
- % Snails
- % Dominant Group
- % Mayflies, Stoneflies, and Caddisflies
- % Diptera
- % Insects
- Hilsenhoff Biotic Index
We have two resources to help calculate the above and to determine what the results of these calculations mean:
With financial support provided by:
